Everyone has their own style. Although some people use boilerplate, it's frowned upon by many people as it doesn't always answer the specific question.
I have a few websites that don't come up easily in a search book marked. Most references will come up fairly quickly in a web search (hint: Google lets you restrict searches to a domain by typing domain:apple.com search term) But, beyond that, there's nothing special about what I do. Like many people who've been around a while, I have my areas of expertise and can generally answer those questions without references. Sometimes, a question interests me and I research it a bit.
I think the most important thing that I do here, though, is learn from other people. I read a lot of posts that I don't answer. I flag ones that interest me that I don't know the answers to and follow the discussions. I'd say I answer one question for every twenty I read, if that. Also, don't get too hung up on points. If you do this for any other reason than that you enjoy it, you'll probably get frustrated.
Best of luck.